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To ensure you get that famous Wonderbra cleavage it's important that you wear a perfectly fitted bra. Not only will it change your shape, but you will also feel supported, comfortable and confident!
We've put together some hints and tips to looking and feeling fabulous in your Wonderbra:

The band is where all the support of the bra comes from and so it should be a firm fit.
The band should be level all the way around your body, and you should only be able to fit 2 fingers inside the band when you are wearing the bra.
When trying a new bra make sure you secure it to the loosest hook and eye, this is so that when the bra stretches through wash and wear you can move it along to tighten it accordingly.
If the back of your bra is riding up then it means that the band is too big and you should go down a size.

The shoulder straps should not be doing all the work of the bra, and if you have indents on your shoulders this is a common sign that the bra is not fitting correctly and the likely cause is that the band is too big.
The shoulder straps should be distributing the weight of the bust, and again you should only be able to fit 2 fingers under the straps.
If your shoulder straps keep slipping off; this is because the bra band is too loose and you need to go down a size in the back. E.g. if you are wearing a 34, you need a 32.

The breasts should be fully encased within the cups of the bra, so you do not have any overspill at all. If you look sideways onto the mirror the bra should sit flat against your chest, there should be no digging in on the breast at all. If this happens the cups are too small.
If you have puckering in the cup, this means the cups are too big and you need to go down a cup size.

If you are wearing an underwired bra, the middle of the bra (the centre gore) should sit flat against the chest wall and separate the breasts. The underwire should then follow the line of the bust, and sit behind the breast tissue, not on it.
To check this you can push the end of the underwire, if you press it and it is hard you know it is sitting on the rib cage and fitting correctly. If you push the underwire and it is soft and making your breast move, it means that the wire is sitting on the breast tissue and you need to go up a cup size.
Please note that whilst this is a reliable guide to wearing the right sized bra we advise that you get fitted professionally.